--- Makefile.in.orig	2021-02-19 17:35:54 UTC
+++ Makefile.in
@@ -774,8 +774,8 @@ pathnames.h:		Makefile $(srcdir)/pathnames.h.in
 	@${RM} pathnames.tmp
 
 # comment out for distribution
-#$(srcdir)/configure:	$(srcdir)/configure.ac $(srcdir)/aclocal.m4 $(srcdir)/config.h.in
-#	cd $(srcdir) && autoconf
+$(srcdir)/configure:	$(srcdir)/configure.ac $(srcdir)/aclocal.m4 $(srcdir)/config.h.in
+	cd $(srcdir) && autoconf
 
 # for chet
 reconfig: force